The invention discloses
carbon nanotube /
polypyrrole nanotube composite electronic ink and a preparation method thereof, and relates to an electronic ink technology. The electronic ink is mainly prepared from, by weight, 0.4-1.2 parts of
polypyrrole nanotube, 0.4-1.2 parts of carbon nanotubes, 1.2-4.8 parts of
bacterial cellulose, 0.4-1.2 parts of a surface
active agent, 0.2-0.6 part of carboxymethylcellulose, 0.4-1.2 parts of a color-fixing agent, 2-6 parts of 3-
amidogen propyl
triethoxysilane, 10-20 parts of ethyl
alcohol, 50 parts of deionized water and 40 parts of 1-methyl-2-pyrrolidone. The electrical
conductivity of
polypyrrole powder obtained through freezing interface
polymerization is high, and the polypyrrole
powder can be taken as a nanomaterial of the electronic ink. After polypyrrole is modified through
bacterial cellulose, the obtained dispersion liquid is more uniform, the phenomenon of
precipitation and gathering cannot easily occur, and addition of the color-fixing agent, the carboxymethylcellulose and the 3-
amidogen propyl
triethoxysilane can improve the
binding force between ink and basic materials. After the prepared ink is subjected to silk-
screen printing, a
coating with washable performance and higher electrical
conductivity can be obtained, in the process of preparing the ink, conditions are controllable, and the cost is lower.